Printing apparatus



3 Sheets--SheecV l l l ENToRs ATTORNEY May 12, 1942. G. o. FRos-rAD ETAL i PRINTING APPARATUS Filed May 15, 1940 May 12, 1942.

G. O. FROSTADY ET AL PRINTING'APPARATUS Filed May 1:5, 1940 3sheds-sheet 2 IIIILLLI lllil QQX NQ\ f -May 12,1942. G. ofFRosTAD AET ALPRINTING APPARATUS Filed My 13, `1940 3 Sheets-Sheet 5' Patented May 12,1342 aranci Unirse smrss earner orrics 2,283,003 PRINTING APPARATUSGeorge 0. Frostad and Raymond J. Nebel, Milwaukee, Wis., assignors to C.B. Henschel Mfg. Co.

Application May 13, 1940, Serial No. 334,764

(Cl. i-182) 28 Claims.

Our invention relates in general to improvements in the art of printing,and relates more specically to improvements in the construction andoperation of printing apparatus or presses of the rotary cylinder type.

A primary object of the present invention is to provide improvedprinting apparatus which is relatively simple, compact and durable inccnstruction, and which is moreover highly efficient and iiexible inoperation.

When printing sheets or webs of relatively delicate materials such asregenerated cellulose, wax or glassine paper, metal foils, cloth, fancypaper, or the like, with special inks, in a variety of colors, and athigh speed, many diicul-ties are encountered. Because of the fact thatmany of the special inks used for this class of work, tend to dryrapidly, it is necessary to avoid stoppage of the ink transfer rollersin order to prevent the ink from drying thereon, when the rotation ofthe plate or type cylinders is temporarily arrested to permitinspection, cleaning or adjustments of parts. It is also frequentlydesirable to stop the rotation of the impression cylinder and of thetype cylinders for inspection or cleaning thereof, and in such cases itshould be possible to again re-start the machine and to bring theimpression and plate cylinders into proper coaction gently and Withoutshock. When performing multi-color work, it is also desirable that theoperator be able to conveniently and accurately adjust the various partsfor most effective and true registration; and while machines of thisgeneral class should be operable at variable speeds and at relativelyhigh maximum speed, they should also be adapted for quick and safestoppage. It should also be possible to quickly vary the diameters ofthe plate or type cylinders of these rotary printing machines, and toreadily aline the cooperating type and impression cylinders and the inktransfer rollers; and it is also desirable to provide means foreffecting proper positioning and adjustment of the ink supply pan, withminimum effort.

It is therefore a more specific object of our present invention toprovide an improved printing press which effectively meets all of theabovementioned requirements and desirable modes of operation, in asimple and highly eiiicient Inanner.

Another specic object of this invention is to provide improved throw outmechanism for simultaneously removing a plate or type cylinder from animpression cylinder and the sheet or web coacting with the latter, andthe ink supply roll from the plate or type cylinder, and for maintainingthe ink transfer rolls in operation even if the rotation of either ofsaid cylinders is arrested.

A further specific object of the invention is to provide improvedmechanisms for quickly and accurately effecting adjustment of variousparts of a cylinder press in a manner which will insure trueregistration of multi-colors and most efflcient cooperation of theYvarious elements of the assemblage.

Still another specio object of ourinvention is to' provide an improvedprinting device capable of making impressions in various colors in rapidsuccession on a continuous relativelyfrail web travelling at highvspeed, without danger of tearing or marring the web.

An additional specific object of the present invention is to providevariousV improvements in the details of construction and operationofcylinder printing presses, whereby the eiciency and safety thereof isenhanced to a maximum, whileA the cost of production of the printedmatter is minimized.

These and other objects and advantages of our invention will be apparentfrom the following detailed description.

A clear conception of the several features constituting our presen-timprovement, and of the mode of constructing and of operating printingpresses built in accordance with the invention, may be had by referringto the drawings accomlpanying and forming a part of the specification`wherein like reference characters designate the same or similar parts inthe various views.

Fig. l is a somewhatdiagrammatic and part sectional side elevation ofone of our improved printing press assemblages showing two sets of typecylinders and ink transferrolls cooperating with a common impressioncylinder; Y

Fig. 2 is an enlarged fragmentary side View of the impression cylinderand of one of the type cylinderand ink transfer assemblages, showingr atype or plate cylinder of minimum diameter;

Fig. 3 is a similarly enlarged fragmentary and part sectional end viewofl the mechanism shown in Fig. 2; l l

Fig. 4 is a likewise enlarged side View similar to that of Fig. 2, butshowing a type or plate cylinder of maximum diameter;

' Fig. 5 is a further enlarged irregular development of fragments of theimpression and type cylinders and of the ink transfer rolls, showing theink roll drive and type cylinder adjusting mechanism, the developmentfollowing the line 5-5 of Fig. 2;

Fig. 6 is a diagram of the type cylinder and ink roll throw outmechanism, showing the elements in active position; and

Fig. '1 is a similar diagram showing the element in inactive position,with the ink transfer rolls being rotated by the auxiliary propellingmeans.

While our invention has been shown and described in connection with acontinuous web revolving cylinder press having a plurality of plate ortype cylinder assemblages cooperable with a common impression cylinder,it is not our desire or intention to thereby unnecessarily restrict thescope or utility of the improvement.

Referring to the drawings, and especially to Figs. l, 2 and 3, theimproved printing apparatus shown therein comprises in general a mainframe 8 of sturdy construction mounted upon an equally sturdy elongatedbase 9; a relatively large impression cylinder II) journalled forrotation upon a hollow horizontal shaft I secured to the frame 8, thecylinder I8 having peripheral teeth I2 meshing with a driving pinion I3carried by a power shaft |4 which is journalled in bearings also mountedon the frame 8l; a web supply roll I5 journalled for frictional rotationby pull on the supply web I6, upon a sub-frame I1 carried by the base 9some distance from the frame 8; a printed web receiving roll I8journalled for positive rotation by suitable driving mechanism, uponanother sub-frame I9 carried by the base 9 remote from the frame 8; aseries of tensioning and guiding rollers 20 supported by overheadframing 2|,V and coacting with the supply web I6 passing from the rollI5 to the cylinder I; another series of tensioning and guiding rollers22 supported by the overhead framing 2| and coacting with the printedweb 23 delivered from the impression cylinder I0 to,Y the receiving rollI8; one or more form, plate or type cylinders 24, each adapted to coactwith the web portion 25 embracing the impression cylinder I0, and

being journalled for rotation in a lower carriage Zi 28 which is movablealong coacting slides 51 resting upon the frame 8, toward and away fromthe cylinder I8; an ink doctor or transfer roll 21 adapted to coact witheach type cylinder 24,

and to also constantly engage an adjacent ink feed roll 28, the rolls21, 28 being journalled for rotation in an upper carriage 29 slidablysupported upon the lower carriage 26; and mechanism for simultaneouslyshifting the carriages 26, 29 relative to the impression cylinder IIJand relative to each other so as to make the type cylinders 24 eitheractive or inactive at will.

Each of the frames 8, I1, I9 may consist of vspaced side elementsrigidly attached to the base 9, and the latter may be formed of a seriesof firmly united sections and may be provided with transverse walks 39for the attendant, see Fig. l. The power shaft I4 and the mechanism forpositively revolvingV the roll I8 Amay be driven in synchronism by meansof one or more motors, not shown, and the rotation of the web supplyroll I should be retarded suiciently to prevent free whirling thereof.Each of the type cylinders 24 is rotatably supported by a shaft 3|journalled in the lower carriage 2S, and the ink transfer roll 21 ofeachY set is rotatable about a shaft 32 which is journalled for rotationin levers 33 pivotally suspended from the upper carriage 29. The ink panroll 28 of each set is rotatable about a shaft 34 which is journalledfor rotation in the upper carriage 29, and the roll 28 has its lowerperipheral portion disposed within an ink pan 35 slidably supported upona vertically adjustable shelf 36.- The peripheral driving teeth |2 ofthe impression cylinder I9, are preferably of the helical type as shownin Fig. 5, and are adapted to mesh with a helical gear 31 secured to anend of the type cylinder 24 and keyed to the shaft 3|, so that when thecylinder 24 is in active position and the cylinder Ill is rotating, thecylinder 24 will also rotate in contact with the web portion 25. Thegear 31 is adapted to mesh with a helical gear 38 secured to an end ofthe ink transfer or doctor roll 21,` and this gear 38 is connectable tothe adjacent portion of the supporting shaft 32 by means of a freewheeling or one-way clutch 39 which is effective to drive the shaft 32only when the roll 21 coacts with the type cylinder 24. The end of theshaft 32 remote from the clutch 39, has a gear 40 secured thereto, whichconstantly meshes with a gear 4| secured to the ink pan roll supportingshaft 34, and the end of the shaft 34 remote from the gear 4| isconnectable to the shaft 42 of an auxiliary motor 43, through reductiongearing 44 and by means of another free wheeling or one-way clutch 45which is effective only when the ink transfer roll 21 is disengaged fromthe type cylinder 24. The assemblage is such, that when the press isoperating normally, the rotation of the impression cylinder I0 by thepower shaft I4 and gear I3, will impart positive rotary motion to thecylinder 24 and ink rolls 21, 28 through the teeth I2, gears 31, 38,clutch 39, and gears 40, 4|; whereas when the cylinders I0, 24 areinactive, the ink rolls 21, 28 will be rotated bythe motor 43 throughthe shaft 42, reduction gearing 44, clutch 45, shaft 34, and gears 4I),4|.

In order to insure positive registry of all of the type cylinders 24,with the work or sheet portion 25 carried by the impression cylinder I0,it is necessary to provide some means for effecting both rotary as wellas longitudinal adjustment of the cylinders 24 relative to the cylinderI8. While the improved mechanism for effecting such adjustment of eachplate or type cylinder 24 has been omitted from the smaller disclosures,it is shown in detail in Fig. 5. The helical gear 31 is provided with acentral sleeve which is splined for sliding along the shaft 3|, and hasan annular end'groove 46 therein, with which an adjusting fork 41coacts, and this fork 41 is slidable in a hole in the side wall of thelower carriage 26 by means of an adjusting screw 48 having a lock nut 49and a fixed collar 50 thereon. The portion of the shaft 3| remote fromthe gear 31 has a grooved collar 5| thereon and adapted to be securedthereto by one or more set screws 52, and another fork 53 which isslidable in the opposite side wall of the carriage 25 coacts with thegroove in the collar 5|. TheV fork 53 is movable by means of anadjusting screw 54 having a lock nut 55 and a fixed collar 56 thereon,and the screw 54, fork 53, collar 5| and set screws 52 normally serve toprevent longitudinal or axial shifting of the shaft 3| and type cylinder24. When the lock nut 49 is released,

v the screw 48 maybe manipulated to shift the fork 41 and helical gear31 along the shaft 3|, thereby rotating the type cylinder 24 relative tothe impression cylinder I9, without producing relative longitudinalshifting of these cylinders. In order to obtain relative longitudinaladjustment of the cylinders I0, 24, it is only necessary to loosen thelock nut 55 and to manipulate the adjusting screw 54, thereby causingthe fork 53 to pull or push the shaft 3| and cylinder 24 without movingthe gear 31'. Proper rotary and longitudinal registry may therefore beindependently effected at each type cylinderV 2li', by ma nipulating theproper adjusting screws 48, 54; and it isV to be noted that theinclination of the teeth of the helical gears I2, 31 is useful Yineffecting rotary adjustment of the several cylinders 24 about theiraxes. These adjustments for registry may also be made either while thepress is stopped or in operation.

It frequently becomes desirable to change the type or plate set up, andto replace the small type cylinders 24 with a larger cylinder 24', seeFigs. 2 and 4and in order to permit this to be done, each slidable lowercarriage is mounted upon spaced slides 51 which are adjustable alongguides 58 and relative to the main frame 8, by means of a pair ofhorizontal lowermost threaded spindles or adjusting screws 59. Theadjusting screws 59 of each set, are journalled for rotation in brackets59' carried by the slides 5'? and have screw thread coaction with thexed frame 8, so that simultaneous rotation of the two screws 59 willcause the slides 51 to travel equal distances along their xedsupportingguides 58. Relative adjustment between the two slides 51 of each set,may be obtained by manipulating one screw 59 to the exclusion of theother, and in order to facilitate simultaneous rotation of the twoscrews 59 of a set, each screw may be provided with a worm wheel 60coacting with the threads thereof, and these worm 4wheels 60 may becaused to coact with spaced screw threads or worms 9E carried by atransverse shaft or rod 62 having a hand wheel 63 thereon, so that byturning the hand wheel 53 the worm wheels 69 will be rotated togetherand will move the two screws 59 equal amounts in the same direction. Thescrews 59 may be locked in adjusted position by means of a nut 94, andthe worm wheels 69 are prevented from shifting axially by virtue oftheir coaction with the brackets 59'. When thev slides 51`are thusshifted toward and away from the impression cylinder I9 to accommodatetype cylinders 29, 24 of different diameters, the lower carriages andthe upper carriage 29 will be correspondingly moved, as a unit; andafter the slides 51 have been moved the required distance i to properlyposition the lower carriage 26, the upper carriage 29 should be adjustedto properly position the inking rolls 21, so as to provide $6l and wormwheelsv 61, and for maintaining the parts in adjusted position.

In order to effect shifting of the upper carriage" oradjusting screws 15coacting with the opposite sides of the carriage 29 and with worm wheels16, are' provided. These worm wheels 16 are journalled for rotation inbrackets 11 which are pivotallyv suspended by pivots 18 from upperportions of the levers 69, and the worm wheels 16 coact with spacedscrew threads or wormsv 19 se- I cured to another transverse shaft orrod 80 journalled in the brackets 11 and provided with a hand wheel 8 l,so that rotation of the hand wheel 8l will cause the worm wheels 16 torotate simultaneously and thereby move both screws 15 to shift thecarriage 29. During such back and forth movement of the carriage 29, theink pan 35 into which the lower roll 28 extends, will be slid along theshelf rails 36, and these rails are provided with downwardly extendinginclined racks 82 which coact with guideways 83 on the frame 8. Theracks 92 are movable along the guideways 83 by means of pinions 84carried by a transverse shaft 85 and coacting with the rack teeth, andthe shaft 85 is rotatable with theaid of a hand wheel 86 and is normallylocked against rotation by a jaw clutch 81. By releasing the clutch 81and turning the shaft 85 with the aid suicient clearance for insertionof the new type cylinder 28'.

In order to effect shifting of the lower carriage 26 and cylinder 24either simultaneously with or relative to its supporting slides 51,intermediate threaded spindles or adjusting screws 66 coacting with theopposite sides of the carriage 26 and with worm wheels 51, are provided.The worm wheels 61 are journalled for rotation in brackets 68 which arepivotally suspended by pivots 63 from the medial portions of levers 89having their lower ends pivotally suspended from the lower brackets 59',and the worm wheels 61 coact with spaced screw threads or worms 19secured to a transverse shaft or rod 1| journalled in the pivot brackets58 and having a hand wheel 12 thereon, so that rotation of the` handwheel 12 will cause the worm wheels G1 to rotate in unison toA therebymove both screws 85 to shift the carriage 26. The screws 66 are alsoprovided with lock nuts 13 for positively preventing rotation of thescrews of the hand wheel 86, the shelf 36 and the ink pan 35 may beraised'or lowered asl desired. In order to bring the ink transfer roll21 which is suspendedfrom the levers 33, intoproper coaction with theroll 28 and cylinder 24, the suspension levers 33 are swingablysuspended at their medial portions from pivot pins 88 carried by thecarriage 29, and the ends of the levers 33 remote from the roll 21 areprovided with pivot blocks 89 in which adjusting screws 99 arejournalled. The threaded lower ends of the screws 99 coact with thecarriage 29 in such manner that turning of the screws 99 Will cause thelevers 33 to swing about the pins 88 and will thereby raise or lower thedoctor roll 21. The rolls 21, 28 may therefore be adjusted relative toeach other, and may be simultaneously moved toward or away from the typecylinder 29 with the aid of the screws 15, and these screws are adaptedto 'be locked in adjusted position by means of lock nuts 9i.

It frequently becomes desirable in the operation of printing presses ofthis kind, to remove the plate or type cylinders 24, 24 from` theimpressionl cylinder I9 and w'eb portion 25, and to simultaneouslyremove the ink transfer roll 21 from the type cylinder, either in orderto eiTect adjustment of parts or to remove the type cylinder forreplacement. This separation of the elements when desired for anyreason, may be ef fected with the aid of the4 levers 59 coacting withthe blocks or pivot brackets 11, 98 and with the carriages 29', 26respectively, through the screws 15, 66, see Figs. 2, 3, 4, 6 and '1.The upper ends of the levers 59 are pivotally connected to thecorresponding ends of links 92, the opposite ends of whichac'oact witheccentrics 93 secured to a transverse shaft 94 which is journalled inthe slide 51; The shaft 99 is rotatable to simultaneously revolve theeccentrics 93, by means of a bevel gear 95 which coasts with anotherbevel gea-r 99 secured to one end of another shaft 91 having a spurgeare thereon. The gear 98 coacts with a rack 99 slidably supported bythe frame, and the rack 99 is vertically reciprocable by means of apinion secured to a shaft |0| journalled in the frame 8 concentricallyof the cylinder |0, and having hand levers |02 secured to an endthereof. The shaft 91, gear 98, rack 99 and pinion |00 may be duplicatedon the opposite side of the machine, and the shaft |0| is in that case,extended through the hollow shaft Il of the impression cylinder I0, sothat the single set of levers |02 may be utilized to actuate both rackand pinion assemblages. The vertically slidable racks 99 are alsoadapted to cooperate with several of the shafts 91, and these shafts aremoreover adapted to coact with the eccentrics 93 of a plurality of typecylinder and inking units, so that all of the type cylinders 24, 24coacting with the impression cylinders will be thrown out and broughtinto action simultaneously. Since it is desirable t0 have the inkingrolls 21, 28 continue to rotate at all times and even when the rotationof either or both cylinders I0, 24 is arrested, the auxiliary motor 43has been provided for the purpose of rotating the rolls 21, 28 wheneverthe driving coaction between the gears 31, 38 is interrupted. One of thelevers 69 may be caused to make contact in the electrical feed line |03of the auxiliary motor circuit, when the levers 69` are swung away fromthe cylinder l0 as in Fig. '1, so that the motor 43 will immediatelybecome effective to rotate the inking rolls 21, 28 whenever the normaldrive for these rolls is interrupted.

While the normal operation of the improved printing press should berelatively apparent from the foregoing detailed description, thisoperation may be described generally as follows. After the impressioncylinder I0, the type cylinder 24, and the inking rolls 21, 28, havebeen brought into proper cooperative relation, the web may be fed fromthe supply roll l5 around the impression cylinder |0 and back to thedischarge roller I8, and as the impression cylinder I0 is revolved byapplication of driving power to the shaft I4, the web will continuouslytravel from the roller |5 around the cylinder I0 and to the roller I8.During this advancement of the web, which may be at relatively highspeed, the type cylinders 24 which are constantly supplied with ink fromthe pans 35 by the rolls 28, 21, will print upon the web portion 25 asthis web portion is conveyed past the type cylinders. If it becomesdesirable to remove the type cylinders 24 from coaction with the webportion 25, this may be done at any time by merely manipulating theradial levers |02. As the shaft |0I is rotated to cause the rack 99 tomove, the shafts 91 will also be rotated thereby causing the eccentrics93 whichare carried by the shafts 94 to rotate. The levers 69 will thenbe shifted from the position shown in Fig. 6, to that shown in Fig. 7,thereby removing the type cylinders 24 from the impression cylinder I0,and simultaneously removing the doctor rolls 21 from the type cylinders24. This separation of the ink transfer rolls 21 from the type cylinders24, will also remove the ink roll driving gears 38 from the gears 31,and simultaneously with this removal the levers 69 will complete theelectrical circuit in the line |03, thereby placing the auxiliary motors43 in operation. These motors 43 will then become effective to continuethe rotation of the ink rolls 21, 28, and will thus prevent the ink fromdrying on these rolls. The operation of the throw outmechanism will thenpermit safe access to the plate or type rolls 24,

for adjustment or cleaning, and adjustment of each of these rolls 24 maythen be effected, independently of all of the others, by manipulatingthe adjusting screws 48, 54 shown in Fig. 1, in a manner previouslydescribed.

If for any reason it should become desirable to replace the typecylinders 24 by other cylinders 24 of different diameter, the slide 51may be withdrawn from the impression cylinder I0, and the carriage 29may be slid along the carriage 26 in a direction away from theimpression cylinder I0, by merely manipulating the screws 59, 66, 15.During this sliding of the carriage 29 relative to the carriage 26, theink pan 35 will be slid along the shelf krails 36. The location of thetype cylinders 24, and of the ink rolls 21, 28 may be independentlyadjusted by manipulating the proper adjusting screws 59, 66, 15, andthese screws may be locked in adjusted position. The location of thedoctor roll 21 relative to the ink pan roll 28 and relative to the typecylinder 24, may be adjusted by manipulating the adjusting screw 90, andthe worm gearing interposed between each of the adjusting screws 59, 66,15 on opposite sides of the machine, will permit convenient andsimultaneous adjustment of the elements on the opposite sides of themachine, which cooperate with the several adjusting screws. The ink pan35 may be raised or lowered by manipulating the hand wheel 86, after theclutch 81 has been released, thus providing various adjustments whichmaterially enhance the flexibility of operation of the machine.

From the foregoing detailed description it will be apparent that ourpresent invention provides a relatively simple, compact and durablerotary printing press, which is highly efficient in operation andextremely flexible in use. The press may be operated to produce printinghaving a Variety of colors, or only a single color, and the single setof hand levers |02 serve to actuate the throw outs on all of the typecylinder units. All portions of the machine are conveniently accessiblefor inspection and adjustment, and those portions which are subject toconsiderable vibration during normal use of the machine, are adapted tobe locked in adjusted position. The throw out of the type cylinders andink rolls may be quickly effected, and the ink is prevented from dryingon the ink transfer rolls whenever such throw out of the type cylindertakes place. The functioning of the machine inv this respect isautomatic except that the throw out mechanism is actuated manually, andby virtue of the fact that the impression cylinder I0 is rotatable abouta hollow shaft, the throw out motion transfer mechanism may be readilyduplicated on opposite sides of the printing press.

It should be understood that it is not desired to limit this inventionto the exact details of construction or to the precise mode of use,herein shown and described, for various modifications within the scopeof the claims may occur to persons skilled in the art.

We claim:

l. Printing apparatus comprising, an impression cylinder rotatable aboutan axis, lower and upper carriages movable parallel to each other towardand away from the periphery of said cylinder, a plate cylinderjournalledupon said lower carriage and normally coacting with saidimpression cylinder, an ink roll carried by said upper carriage andnormally coacting with said plate cylinder, and means for simultaneouslymoving said carriages relative to said impression cylinder and relativeto each other to separate said cylinders from each other and said platecylinder from said roll.

2. Printing apparatus comprising, an impres- Asion cylinder rotatableabout an axis, lower and upper carriages movable parallel to each othertoward and away from the vperiphery of saidV cylinder, a plate cylinderjournalled upon said lower carriage and normally coacting with saidimpressioncylinder, an ink roll carried by said upper carriage andnormally coacting with said plate cylinder, and a lever pivotallyassociated with said carriages for simultaneously moving Ythe samerelative to each other and relative to said impression cylinder toseparate said cylinders from each other and from said roll.

3. Printing apparatus comprising, an impression cylinder rotatable aboutan axis, lower and upper carriages movable parallel to each other towardand away from the periphery of lsaid cylinder, a plate cylinderjournalled upon said lower carriage and normally coacting with saidimpression cylinder, an ink roll carried by said upper carriage andnormally coacting with said plate cylinder, a lever pivotally associatedwith said carriages for simultaneously moving the same relative to eachother and relative to said impression cylinder to separate saidcylinders from each other and from said roll, and means for effectingindependent adjustment of said carriages relative to said lever.

4. Printing apparatus comprising, an impression cylinder, a pair ofcarriages movable parallel to each other toward and away from theperiphery of said cylinder, a plate cylinder suspended from one of saidcarriages and normally coacting with said impression cylinder, an inkroll suspended from the other of said carriages and normally coactingwith said plate cylinder, and means for effecting either independent orsimultaneous movement of said carriages toward or away from saidimpression cylinders.

5. Printing apparatus comprising, an impression cylinder rotatable abouta xed horizontal axis, a lower carriage slidable upon a xed supporttoward and away from said cylinder, an intermediate carriage slidableupon said lower carriage, a plate cylinder journaled upon saidintermediate carriage for rotation about a horizontal axis, an uppercarriage slidable upon said intermediate carriage, an ink rolljournalled upon said upper carriage for rotation about a horizontalaxis, and means for eiecting movement of said lower carriage to causesimultaneous movement of said plate cylinder and roll toward or awayfrom said impression cylinder and for also effecting relative movementof all of said carriages to move said cylinders relative to each otherand to said roll.

`6. Printing apparatus comprising, an impression cylinder rotatableabout a fixed horizontal axis, a lower carriage slidable upon a xedsupport toward and away from said cylinder, an intermediate carriageslidable upon said lower carriage, a plate cylinder journalled upon saidintermediate carriage for rotation about a horizontal axis, an uppercarriage slidable upon said intermediate carriage, an ink rolljournalled upon said upper carriage for rotation about a horizontalaxis, and means for eiecting either independent Yor simultaneous slidingof said carriages relative to each other.

'7. Printing apparatus comprising, an impres- :sion .cylinder rotatableabout -a Yixed horizontal termediate carriage for rotation about alhorizontal axis, an upper carriage slidable upon said intermediatecarriage, an ink roll journalled upon said upper carriage for rotationabout a horizontal axis, and a lever pivotally associated with all ol'said carriages for effecting simultaneous movement rof said upper andintermediate carriages relative .to each other and at different rates ofspeed.

8. Printing apparatus comprising, an impression cylinder rotatable abouta horizontal axis, a lower carriage slidable toward andk away from saidCylinder, an intermediate carriage slidable upon said lower carriage andproviding a support for a rotary plate cylinder coacting with saidimpression cylinder, an upper carriage slidable upon said intermediatecarriage and providing a support for a rotary inkroll coacting with saidplate cylinder, a lever pivotally suspended from i said lower carriageand being connected to said intermediate and upper carriages, andeccentric means for effecting swinging `of said lever to simultaneouslydisplace said plate cylinder and said roll relative to said impressioncylinder and to each other.

9. Printing apparatus comprising, an impression cylinder rotatable abouta horizontal axis, a lower carriage slidable toward and away from saidcylinder, an intermediate carriage slidable upon said lower carriage andproviding a support axis, a lower support movable toward and away yfromsaid cylinder, a plate cylinder rotatable about a horizontal axis andbeing' cooperable with said impression cylinder to effect printing, anintermediate support resting upon said lower support and upon which saidplate .cylinder is journalled, an ink roll rotatable vabout ahorizontalaxis and being cooperable with said plate cylinder to vdistribute inkthereon, an upper support resting upon said intermediate support andupon which said roll ris journalled, andf'me'ans for effecting relativemovement of 'said supports to separate said cylinders and said roll.

1l. Printing apparatus comprising, an impression cylinder rotatableabout a xed horizontal axis, a lower support movable toward Yand awayfrom said cylinder, .a plate cylinder rotatable about a horizontal axisand being cooperable-with said impression cylinder to effect printingan-intermediate support resting'upon saidlower lsupport and upon whichsaid plate-cylinderis journalled, an ink roll Vroitataloleabout ahorizontal axis and being cooperable with said platehcylinder todistribute ink thereon, an upper ,support resting upon said intermedi tesupport and upon which said roll-is journalled, and a leverconmultaneously move said plate cylinder and roll Y axis, a lowercarriage slidable upon a iixedsuprelative to said impression cylinderand to each other. Y

12. Printing apparatus comprising, an impression cylinder rotatableabout a fixed horizontal axis, a lower support movable toward and awayfrom said cylinder, a plate cylinder rotatable about a horizontal axisand being cooperable with said impression cylinder to effect printing,an intermediate support resting upon said lower support and upon whichsaid plate cylinder is journalled, an ink roll rotatable about ahorizontal axis and being cooperable with said plate cylinder todistribute ink thereon, an upper support resting upon said intermediatesupport and upon which said roll is journalled, a lever swingablysuspended from said lower support and having upper swinging portionsthereof connected to said intermediate and upper supports, and aneccentric operatively associated with the swinging end of said lever tosimultaneously move said supports.

13. Printing apparatus comprising, an impression cylinder rotatableabout a fixed horizontal axis, a lower support movable toward and away`from said cylinder, a plate cylinder rotatable i about a horizontalaxis and being cooperable with said impression cylinder to effectprinting, an intermediate support resting upon said lower support andupon which said plate cylinder is journalled, an ink roll rotatableabout a horizontal axis and being cooperable with said plate cylinder todistribute ink thereon, an upper support resting upon said intermediatesupport and upon which said roll is journalled, a lever swingable tosimultaneously move said supports, and means for effecting Variation inthe relative movement of said supports by said lever.

14. Printing apparatus comprising, an irnpression cylinder rotatableabout a fixed horizontal axis, a lower support movable toward and awayfrom said cylinder, a plate cylinder rotatable about a horizontal axisand being cooperable with said impression cylinder to effect printing,an intermediate support resting upon said lower support and upon whichsaid plate cylinder is journalled, an ink roll rotatable about ahorizontal axis and being cooperable with said plate cylinder todistribute ink thereon, an upper support resting upon said intermediatesupport and upon which said roll is joui-nailed, a pair of laterallyYspaced simultaneously swingable levers interconnecting said supports,and means for swinging said levers in unison to produce parallelmovement of said plate cylinder and roll relative to said impressioncylinder and to each other.

15. Printing apparatus comprising, an impression cylinder rotatableabout a fixed horizontal axis, a lower support movable toward and awayfrom said cylinder, a plate cylinder rotatable about a horizontal axisand being cooperable with said impression cylinder to effect printing,an intermediate support resting upon said lower support and upon whichsaid plate cylinder is journalled, an ink roll rotatable about ahorizontal axis and being cooperable with said plate cylinder todistribute ink thereon, an upper support resting upon said intermediatesupport and .upon which said roll is journalled, a pair of laterallyspaced levers pivotally suspended from said lower support and beingconnected to the opposite side portions of said intermediate and uppersupports, and eccentric means for simultaneously ,swinging said leversto produce parallel displacement of said plate cylinder and rollrelative to said impression cylinder and to each other.

16. In combination, a form cylinder, an inking mechanism thereforcomprising, an ink fountain, a fountain roller revoluble therein, meansfor adjusting the fountain and roller together toward and away from theform cylinder, said adjusting means comprising a pair of threadedspindles, worm wheels internally threaded thereon, a, threaded shaft inoperative engagement with said worm wheels, and means for turning saidshaft.

1'7. In combination, an impression cylinder, a form cylinder, an inkingmechanism therefor comprising, an ink fountain, a fountain rollerrevoluble therein, means for adjusting the form cylinder, ink fountainand fountain roller as a unit toward and away from the impressioncylinder, means for adjusting the ink fountain toward and away from theform cylinder, said fountain adjusting means being operableindependently of said form cylinder adjusting means.

18. In combination, an impression cylinder, a form cylinder, an inkingmechanism therefor comprising, an ink fountain, a fountain rollerrevoluble therein, means for adjusting the form cylinder, ink fountainand fountain roller as a unit toward and away from the impressioncylinder, said means including mechanism for further adjusting the formcylinder and inking mechanism as a unit at each end separately towardand away from the impression cylinder, and means for maintaining theperipheral relationship of the fountain roller and form cylinder duringsaid adjustments.

19. In combination, a form cylinder, inking mechanism comprising an inkfountain and a fountain roller revolvable therein to deliver ink to saidform cylinder, and means for simultaneously adjusting said fountain androller toward and away from said form cylinder, said adjusting meansincluding a pair of rotary spindles, worm wheels carried by saidspindles, and a rotary shaft having screw threads in operativeengagement with said worm wheels.

20. In combination, a form cylinder, inking mechanism comprising an inkfountain and a fountain roller revolvable therein to deliver ink to saidform cylinder, and means for simultaneously adjusting said fountain androller toward and away from said form cylinder, said adjusting meansincluding a pair of rotary spindles, worm wheels carried by saidspindles, a rotary shaft having screw threads in operative engagementwith said worm wheels, and means for turning said shaft tosimultaneously rotate said worms.

21. In combination, an impression cylinder, a form cylinder, inkingmechanism comprising an ink fountain and a fountain roller revolvabletherein to deliver ink to said form cylinder, means for adjusting theform cylinder and inking mechanism as a unit toward and away from saidimpression cylinder, and means for adjusting said ink fountain towardand away from said form cylinder, said fountain adjusting means beingoperable independently of said form cylinder adjusting means.

22. In combination, an impression cylinder, a form cylinder, inkingmechanism comprising an ink fountain and a fountain roller revolvabletherein to deliver ink to said form cylinder, means for adjusting theform cylinder and inking mechanism as a unit toward and away from saidimpression cylinder, and means for adjusting said fountain roller towardand away from said form cylinder, said fountain roller adjusting meansbeing operable independently of said form cylinder adjusting means.

23. In combination, an impression cylinder, a form cylinder, inkingmechanism comprising an ink fountain and a fountain roller revolvable24. In combination, an impression cylinder, a

form cylinder, inking mechanism comprising an ink fountain and afountain roller revolvable therein to deliver ink to said form cylinder,means for adjusting the form cylinder and inking mechanism as a unittoward and away from said impression cylinder, and means for adjustingsaid fountain roller toward and away from said form cylinder, saidfountain roller adjusting means being operable either simultaneouslywith or independently of said form cylinder adjusting means.

25. In combination, an impression cylinder, a form cylinder, inkingmechanism comprising an ink fountain and a fountain roller revolvabletherein to deliver ink to said form cylinder, and means for adjustingthe form cylinder and inking mechanism as a unit toward and away fromsaid impression cylinder, said adjusting means including mechanism forfurther adjusting said form cylinder and inking mechanism at each endindependently toward and away from said impression cylinder.

26. In combination, an impression cylinder, a

Vform cylinder, inking mechanism comprising an ink fountain and afountain roller` revolvable therein to deliver ink to said formcylinder, means for adjusting the form cylinder and inking mech-A anismas a unit toward pression cylinder, said adjusting means includingAmechanism for further adjusting said form cylinder and inking mechanismat each end independently toward and away from said impression cylinder,and means AforV maintaining the peripheral relationship between saidfountain roller and form cylinder during said adjustment.

27. In combination, an impression cylinder, superimposed carriagesmovable along parallel planes toward and away from said cylinder, a formcylinder journalled for rotation upon one of said carriages and normallycoacting with said impression cylinder, an ink transfer rollerjournalled vfor rotation upon the other of said car-V riages andnormally coacting with said form cylinder, means for simultaneouslymoving said carriages relative to said impressioni cylinder and relativeto each other to separate said cylinders from each other and said formcylinder from said roller, and means for independently moving' saidcarriages relative to said impression cylinder and relative to eachother. Y

28. In combination, an impression cylinder, lower and upper carriagesmovable along parallel planes toward and away from saidcylinder, a formcylinder rotatably journalled upon said lower carriage and normallycoacting with said impression cylinder, an ink roller mounted upon saidupper carriage and normally coacting with saidform cylinder, andmeans'for either indef pendently or simultaneously moving said carriagesrelative to said impression cylinder and relative to each other toseparate said cylinders from each other and said form cylinder from.

said roller.

GEORGE O. FROSTAD. RAYMOND J. NEBEL.

and away from said im=

